Have you flashed the BIOS to the most up to date version and switched the lane to x4?
 
Also, the M.2 on the X99 Classified is only rated at PCI-E 2.0 x4. 

enkrypt3d
The bios setting only sets the generation not the speed right? If I set it to gen 2 instead of auto would it put it at 4x? And yes I'm on the latest bios version

Yes, you should be able to select the speed as well, if I recall correctly.

Can anyone help me here? If I put the Revodrive in PE5 it runs at Gen2 4X. This slot is covered up by the 2nd GPU that is in PE4.
 
Now I've tried putting the SSD in PE2, PE3 same issue. It runs at GEN1 1x which cuts the revodrive's speed in half.
 
If I put the 2nd GPU in PE2, both cards run at 8X... but they get very hot this way since they are right next to each other and its very tough to remove them if I ever have to. If I put the 2nd GPU in PE3, it runs it at 4x.. Whiskey tango foxtrot? The whole reason I bought this board & cpu combo was so that all devices would run at max speed and not have these problems. I'm on the latest bios / firmware & driver.
 
Another weird thing - I just installed windows 10 (on a spare drive, without the revodrive installed in the system) to see if both GPU's will run at 16x. One in Pe1 and the other in PE4, the secondary is running at 8x! Why? My CPU should be more than capable of running both GPU's at 16x. Clearly something isn't right. Please help! I've called evga support & OCZ and neither know what to do...
 
Also with the revodrive, sometimes it shows up in POST and sometimes it doesn't. The only way to get it to boot off of it is to go into the bios after it throws this error: LEGACY_OPROM_NOSPACE (and it's not listed in the bios when it used to be), click save even after not changing anything then suddenly its back...

Yea it doesn't make sense to me. I tried it with only the gpu in pe1 and pe3 with the os running on a sata drive and still the 2nd gpu was at 8x. Shouldn't both be at 16x? Going to try with v1.12 bios to see if I have the same problem.

Yes this is all on v1.18. I flipped back to one of the other BIOS v1.12 and it doesn't have this issue. 
 
GPU1 in PE1 @ 8x Gen3
SSD in PE2 @ 4x Gen2
GPU2 in PE4 @ 8x Gen3
 
I guess that's the best I can get. I was under the impression that both GPU's would be at 16x with a 40 lane CPU? I know its not a bottleneck but I'm just trying to clarify.
 
Clearly there is a bug in the new bios v1.18 as the Revo would not show up under post randomly and give me the LEGACY_OPROM_NO_SPACE error on boot. Can someone from EVGA staff chime in on this? I can't find anything about what this error code means. Its not happening on the older versions of the BIOS.

LeMakisar
I'm sorry that won't help, but man this board definitely has some serious PCIe compatibility issues :s
 
I'm beginning to be very annoyed, is EVGA at least working on it?
Is it possible that it's an hardware issue they'll never be able to solve ? At least they should tell us .... 
 
Sorry for this post, but I'm really getting annoyed by all the issues ...

No need to apologize. We pay a premium for these products and I expect them to work without issue. I'm not doing anything crazy with this board. These boards are for enthusiasts who will push them to the limits (which I'm not) and it's still buggy.
 
What I don't get is if the PCI-E slot is set to Auto, the motherboard negociates a *GEN1 1X* speed for the Revodrive. !?!
 
On v1.18, If you set it to Gen2, it doesn't fix the issue.
 
On v1.12, if you set it to Gen2 for the revodrive it appears to work as expected.
 
STILL though I'm confused as to WHY my 3 PCI-E Devices aren't running at full speed when there are plenty of lanes available.

Whats the point in having a 40 lane CPU when the motherboard won't use them and run all the devices at full speed? 

Yup, you seem to have a hardware issue.  You still should be getting x16 on both GPUs with the CPU you have regardless even on another BIOS unless the 1.12 didn't have that support as of yet because I know on release, everyone got 1.12 and the later BIOS upgrades fixed many issues at the time. 
 
Either something is wrong with your CPU, check the CPU and socket for any bent pins, etc. and if nothing shows up wrong there, I'd start a RMA on the MB and possibly the CPU if the problems persist after getting a RMA'd MB or vise versa.

enkrypt3d
How would one RMA the CPU? I bought it at Fry's... would it be thru Intel?

It depends how long you've had it now since you purchased it and what the return policy is at Frys.  If that's past its time, than yes, Intel would be the place to go for a RMA. 

Take a screen shot of your BIOS and post it on here with everything connected on the board and under the PCI-E Auto tabs mark.  Its always good to document your issues with images.

 
This is going to have to do for now...  Its really weird that BOTH GPU's aren't running at 16x...

The first screenshot is what EVGA recommended and as you can see it does not behave as they said it would.
 
I've tried every combination of slots I can think of and yes being OC'd didn't matter (I've tried on stock everything after clearing CMOS).
 
Each GPU works fine. I had more issues on v1.18 than 1.12 so I'm staying on 1.12 until they release a new one that fixes these PCIE lane issues. No where in the documentation does it say that for Gen2 cards, that you have to manually set it to Gen2 in order for it to negotiate the proper speeds. This is supposed to be automatic.
 
Temps never get above 65-70C under full load and temps hover from 45-50C at idle.. I had the CPU at 4.7Ghz but I've dialed it back a bit just to be sure I don't fry anything. Honestly I'm tired of fiddling with it.
 
There are a lot of unanswered questions in this thread that remain. I just want to know what is eating up all the available PCIE lanes that I paid a premium to get.

Its a corsair H100i CPU cooler.
 
I know that having both GPU's at 8x is fine but the inconsistencies is what really bothers me. This is supposed to be a board that is used for extreme overclockers and stability and consistency is paramount.
 
I've done tons of stress testing and everything seems fine. Ran dozens of 3dmark tests and AIDA64 tests without much problem aside from the occasional reset / BSOD.

encrypt, what is your Atto bench test at 4x, 8x and 16x? is there a big difference?